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Finding the Fourth Proportional to 377.31, 520.65 and 324.93

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Solution

The fourth proportional to 377.31, 520.65 and 324.93 is: 448.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.31 : 520.65 = 324.93 : x
  2. Step 2: Convert to fraction form
    377.31/520.65 = 324.93/x
  3. Step 3: Cross multiply
    377.31x = 520.65 × 324.93
  4. Step 4: Simplify right side
    377.31x = 169,174.80
  5. Step 5: Solve for x
    x = 169,174.80/377.31
  6. Step 6: Final answer
    x = 448.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.